Former Texas A&M QB Johnny Manziel probably wasn't going No. 1 overall to the Houston Texas, or No. 2 to the St. Louis Rams. But when the Jacksonville Jaguars came up to pick, there was a genuine feeling that we'd bear witness to the birth of Johnny Jacksonville. But it didn't happen.

Then there was Cleveland at No. 4. That didn't happen either.

Neither did Manziel to the Raiders at No. 5. Or to the Vikings at No. 9, or to the Rams at No. 13. When the Dallas Cowboys' turn to pick came at No. 16, there was a strong desire to see Johnny Football move in to Cowboys Stadium and create a circus down there. It didn't happen.

Johnny Broadway didn't happen either. The Jets passed too.

By the time the Browns made it's third trade of the first round (on a pick acquired via the Trent Richardson trade), the "When will Johnny go?" narrative had dominated the draft broadcast. For whatever reason, Manziel fell all the way to No. 22 overall.

There's no one reason that Manziel fell. There are a number of factors that likely played into his value dropping for teams at the top of the first round. Here are some possibilities as to what were likely come contributing factors:

Pocket presence

At Texas A&M, Manziel used his athleticism and improvisation skills to make some big plays against college defenses. What he didn't do, though, was deliver the ball from the pocket on a regular basis. When given the option to step up in the pocket or scramble, Manziel usually picked the latter.

Manziel is prolific when put in the right system that frees him up to do Johnny Football things. However, that means that the team that drafts Manziel is required to tailor their offense to suit him. NFL coaches use certain schemes for a reason. Few would be jazzed about having to re-tool their whole offensive philosophy to more of a college spread style attack when they can just take a guy who can fit the system.

The Day 2 QB targets

Manziel's free fall began when the Jaguars took Blake Bortles at No. 3. After that, though, there were no other QBs taken, meaning that there was little rush for QB-needy teams to jump on Manziel when he fell to them.

Manziel may have gotten high grades from certain teams. However, with guys like Teddy Bridgewater, Derek Carr, Jimmy Garoppolo and AJ McCarron still on the board, there was no rush to grab a passer.

The rest of this draft was too good

This is the most likely reason.

The 2014 draft class has a reputation of being historically deep at a number of positions -- and not at quarterback. There's little motivation for a team to grab Manziel if they value a player at another position higher.

He's still short

Players like Drew Brees and Russell Wilson have proved that short cornerbacks can excel at the NFL level, especially if they have the mobility to break the pocket and make plays. But it's still not a good thing.

Manziel doesn't have the stout frame that many scouts look for in holding up against NFL defenders. But the big issue is that Manziel didn't operate from the pocket much, something that he'll be tasked with in most offenses. From the pocket, Manziel's size makes him vulnerable to defenders batting balls down at the line of scrimmage. Guys like Brees excel at finding passing lanes and avoiding this. However, Manziel was so reliant on leaving the pocket that he never got much of a chance to show off this skill.

The headcase factor

It's really hard to determine how teams feel about Manziel on a personal level. Only those that were present in his private interviews have an idea of the impression he made on coaches and GMs. However, Manziel's had to fight an uphill battle on that front ever since winning the Heisman. The ESPN-ification of Johnny Football has created more of a caricature than an accurate public profile. Some teams might just want to avoid that altogether.